Description

Hit the trail prepared when you head out with the Osprey Viper 4 Hydration Pack. This hands-free hydration system stores up to two liters of water and can tote the other essentials you’ll need during your trail runs, rides, and hikes.

HydraForm reservoir is made with BPA- and PVC-free materials and features a design that squeezes your water supply for easier drinking

SpacerMesh back panel provides super-light cushioning for a comfortable fit

BioStretch shoulder harness system features mesh-covered foam for superior comfort and small sleeves to hold your energy gel pouches